Power-transmitting and braking device.



No. 693,365, Patented Feb 18,1902.

, J. 0., B LEVNEY. POWER TRANSMITTING AND- BRAKING DEVICE. (Applicqtion mm Max-N13, 1901.

" (No Model.) v {Sheets-Sheet l.

"1/ INVENTOR:

y ATTTJRNEY.

m. 693,365. Patented Feb. I8, I902.

J. c. BLEVNEY.

POW ER TRANSMITTING-"AND BRAKING DEVICE.

(Appiication filed Iar. 13, 1901.)

(No Model.) I 3 Sheets-Shaet 2.

WITNESSES: f INVENTORSV John mE m'urwy, T .S

, ATTORNEYS.

No. 693,365. Patbntod m. I8, [902.

J. c. B LEVNEY. POWER TB ANSMITTI NGAND BRAKING DEVICE.

' Y (Applicution' flX ed Lia-n18, 1901.) (No Model.) 3 Shouts-Shoot 3. 7

' WITNESSES: I v Y mvamom John (1.,Bbcwnwg,

Y ATTORNEYS;

m: norms PETERS ca. PHQTGLITHOH wnsumorcu, n. c.

UNITED STATES PATENT JOHN C. BLEVNEY, OF NEWARK, NEW JERSEY.

POWER-TRANSMITTING AND BRAKING DEVICE.

srncirrcacrrolv forming part of Letters Patent no. 693,365, dated February 18, 1902. Application filed March 13, 1901. Serial No. 50,970. (No modem To alt whom itinaiy concern: I Be it known that 1, JOHN C. BLEVNEY, a citizen of the United States, residing at New ark, in the county of Essex and State of N ew Jersey, have invented certain new and useful Improvements in'Power Transmitting and Braking Devices; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will-enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked. thereon, which form a part of this specification.

The objects of this invention are to provide a braking and power-transmitting device, more particularly for horseless carriages, which will be more compact in arrangement and more effective and certain in itsoperation and one which will be more perfectly free from exposure to dust and dirt; to provide braking means which will be less liable to become inoperative because of breakage; to provide a differential movement by more simple and compact means, and thereby toreduce the cost of construction and to render the outward appearance of the vehicle less cumbersome and complicated, and to secure other advantages and results, some of which may be referred to hereinafter in connection with the description of the working parts.

The invention consists in the improved power-transmitting and braking device and in the arrangements and combinations of parts of the same, all substantially as will be hereinafter set forth and finally embraced in the clauses of the claim.

Referring to the aecompan yin g drawings, in

which like letters of reference indicate corresponding parts in each of the several views, Figure 1 is-a rear elevation of a portion of a a vehicle to which myimproved device has been Figs. 5 and 6 are respectively face and side views of a compound pinion having bearings in or on said brake-wheel; and Figs. 7 and 8 are face views of two driving-wheels adapted to be fastenedrigidly upon the axles of the vehicle to rotate therewith, said wheels being provided with spursto engage the compound pinion above referred to and with brakingsurfaces, as will be hereinafter described.

In said drawings, 0. indicates the body of a vehicle, preferably a vehicle driven by steam or other power from motors carried thereby. bb are the springs upon which said body is supported, said springs being in turn supported by axle-casings 0, through which casings the axles d extend to the wheels 6 6.

Upon the inner ends of the axle-casings c are cast or otherwise rigidly fastened casingsections f f, which are at their peripheral parts properly flanged, as at-g, and perforated to receive bolts h, by means of which the saidsections ff are held together and serve to in-' close and protect the braking and differential power-transmitting means, hereinafter specified; The box or casing formed by said sections is open, as at i '11, to permit the out-passage of the power-transmitting chain j and the brake strap or connections in any suitable manner.

Within the casings c the shouldered axles d are provided with screw-threads at their inner extremities, upon which are rigidly fixed correspondingly-threaded wheels Zm. (Shown in section in Fig. 1 arid in detail in' Figs. 7 and 8.) Said wheels Z m are each provided with spurs or cogs u 'u in annular series, one of the wheels being interiorlyspurred, as at o, and the other exteriorly spurred, as at u, I the exterior spurs being in a smaller series than the interior series of spurs. At the peripheries of said wheels 1 m the same are flanged 0r broadened to provide a large or sufficiently large peripheral braking-surface to engage brake straps or shoes 7c, fastened upon the casing and adaptedto press or. be

pressed upon said surfaces to secure a fric.

tional resistance. Between the said wheels Z we and arranged upon a supplemental shaft .IOO

opposite sides flanges p, which coincide with the periphery of the wheels I m, the peripheral surfaces of said wheels lying flush at the same radial distance from the axes of said wheels. The brake-straps 7.; may thus lie in braking or frictional relation with both of said flanges p and wheels Z m, the said straps overlapping the parts and braking the joints, as shown in Fig. 1. The sprockets n, formed on said wheel 01, are between the flanges 19 p and lie between the said straps and are adapted to engage with the power-transmitting chain j, so that power is transmitted from the motor to the wheel a to rotate the same upon or with its supplemental shaft 0. Between the axial bearings of the driving-wheel n and the said sprockets n and flanges p p at the periphery of said wheels the said wheel 72 is provided, preferably, with a series of boxes or cages q, Figs. 3 and 4, in which may be dropped and pinned one or a series of compound pinions 1". (Shown in detail in Figs. 5 and 6.) One of the members 3 of the said compound pinions is the smaller one, having a few teeth in the series, and the other, if, is a large member with a larger number of teeth in the series. The member 25 engages the interior spurs v of the wheel Z, and the small member s engages the exterior spurs u of the wheel m. As the wheel 71 rotates under the power imparted to it by the chain J and the vehicle-motor the compound pinions '2" revolve therewith about the axial shaft 0 and would rotate on their own axes if free to do so; but the relation of the smaller members of the compound pinions to the outside spurs u is such as to tend to cause said compound pinions to rotate in one direction, While the tendency of the larger members I, in connection with the inside spurs o, is to efiect-reverse movements of said compound pinions. The said pinions are thus looked under normal conditions with the wheels m Z, and the latter are clutched and effect a rotation of the axles d d and wheels e e in one and the same direction; but shouldv the resistance on one of the wheels 6, due to the turning of a curve or otherwise, exceed that of the other Wheel then will the wheel having such resistance stop entirely and the other will rotate at an increased speed until the normal is once more established. There will thus be no sliding of the wheels on the ground and a consequent wear upon the tire.

The construction of the compound pinions 9', each having the large and small pinion members 8 t on one axle and adapted to be dropped into a box or cage (1 of the brakewheels and pinned therein by the pins 10, is of simple construction, permitting of quick assembling and avoiding the use of screws, which are apt to jar loose in operation, and

p the construction described is thus conducive to durability and ease of repair.

I am aware that various modifications and changes may be made in the construction and arrangements of the various parts Without departing from the spirit and scope of the in vention, and I therefore do not Wish to be understood as limiting myself by the specific terms above positively employed, excepting as the prior state of the art may require.

Having thus described the invention, what I claim as new is-=- 1. In a power-transmitting device, the combination with the wheels and axles, of brakewheels fixed to the adjacent inner ends of said axles, said brake-wheels having spurs formed thereon, one wheel having an interior series and the other an exterior series of spurs, and an intermediate driving-wheel with brakeflanges and compound pinions engaging the spurs, a brake-strap adapted to engage said brake-wheels and driving-wheel and means for transmitting power to said driving-wheel, substantially as set forth.

2. In a power-transmitting device, the combination with the vehicle-wheels and their axles, of brake-wheels fixed to the inner ends of said axles, said brake-wheels having spurs formed thereon in annular series, the series of one wheel being at a greater distance from the axis of rotation than the series of the other wheel, an intermediate driving-wheel having surfaces to be engaged by a brakestrap and having bearings for compound pinions, said compound pinions having each a large and a small member, one to engage one of said series of spurs and the other, the other series of spurs, and brake-straps adapted to engage both the brake-Wheels and drivingwheel, substantially as set forth.

3. In a power-transmitting device, the com bination with the wheels and axles, of a powertransmitting wheel independent of the said axles and adapted to be clutched thereto whereby power may be transferred from said transmitting-wheel to said axles, of a brake-wheel having its peripheral braking surface corresponding or coinciding with a peripheral surface of said po wer-transmitting wheel, and a brake strap overlapping and adapted to engage both said transmitting wheel and brake-wheel, substantially as set forth.

4. In apower-transmitting device, the com bination with the wheels and axles and a power-transmitting wheel adapted to receive power from a motor, of a brake-wheel at tached to one of said axles and a brake-strap adapted to enter into braking engagement with both said power-transmitting wheel and brake-wheel at one and the same time, substantially as set forth.

5. In apower-transrnitting device, the combination with the axles, of a toothed powertransmitting wheel having at opposite sides flanges, and having bearings to receive gearing by which power is transmitted from said power-transmitting wheel, of brake-wheels,

IOU

at opposite sides of said power-transmitting wheel, having braking-surfaces and. cooper I testimony that I claim the foregoing I have hereuntoset my hand thisllth day of IO ating gearing-teeth; and intermediate gearing March, 1901. engaging the teeth of the power-transmitting Wheel and the teeth of the brake-Wheels, and brake-straps engaging both the power-transmitting wheel and the brake-wheel to stop rotation, substantially as set forth.

JOHN 0. BLEVNEY.

Witnesses;

CHARLES H. PELL, O. B. PITNEY. 

